Triangle, read by rows, T(n,k) = (7*n-7*k+1)*T(n-1, k-2) + (7*k-6)*T(n-1, k) + 7*T(n-2, k-1) with T(n, 1) = T(n, n) = 1.

A144445

Triangle, read by rows, T(n,k) = (7*n-7*k+1)*T(n-1, k-2) + (7*k-6)*T(n-1, k) + 7*T(n-2, k-1) with T(n, 1) = T(n, n) = 1.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =23a(5) =1a(6) =1a(7) =206a(8) =206a(9) =1a(10) =1a(11) =1677a(12) =6341a(13) =1677a(14) =1a(15) =1a(16) =13452a(17) =133451a(18) =133451a(19) =13452a(20) =1a(21) =1a(22) =107659a(23) =2403612a(24) =5916231a(25) =2403612a(26) =107659a(27) =1a(28) =1a(29) =861322

External references